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2.6 Daughter Boards
2.6.1
DB-16P Isolated Input Board
The DB-16P is a 16-channel isolated digital input daughter board. The optically
isolated inputs of the DB-16P consist of a bi-directional optocoupler with a resistor
for current sensing. You can use the DB-16P to sense DC signal from TTL levels up
to 24 V or use the DB-16P to sense a wide range of AC signals. You can use this
board to isolate the computer from large common-mode voltage, ground loops and
transient voltage spike that often occur in industrial environments. Note: The lowest
nibbles, bit_0 to bit_3, are used by PCI-M512, so only the highest 12-bits, bit_4
to bit_15, are available.
V+
D/I-4 ~ 15 of PCI-M512
VOpto-Isolated
CN2=D/I
PCI-M512/M512U
20Pin cable
DB-16P
AC or DC Signal
0 V to 24 V
PCI-M512 User Manual (Ver.2.7, Jun./2010, PMH-017-27)
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